[188] | 1 | /*
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| 2 | * The Apache Software License, Version 1.1
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| 3 | *
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| 4 | * Copyright (c) 2001 The Apache Software Foundation. All rights
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| 5 | * reserved.
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| 6 | *
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| 7 | * Redistribution and use in source and binary forms, with or without
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| 8 | * modification, are permitted provided that the following conditions
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| 9 | * are met:
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| 10 | *
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| 11 | * 1. Redistributions of source code must retain the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer.
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| 13 | *
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| 14 | * 2. Redistributions in binary form must reproduce the above copyright
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| 15 | * notice, this list of conditions and the following disclaimer in
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| 16 | * the documentation and/or other materials provided with the
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| 17 | * distribution.
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| 18 | *
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| 19 | * 3. The end-user documentation included with the redistribution,
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| 20 | * if any, must include the following acknowledgment:
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| 21 | * "This product includes software developed by the
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| 22 | * Apache Software Foundation (http://www.apache.org/)."
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| 23 | * Alternately, this acknowledgment may appear in the software itself,
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| 24 | * if and wherever such third-party acknowledgments normally appear.
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| 25 | *
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| 26 | * 4. The names "Xerces" and "Apache Software Foundation" must
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| 27 | * not be used to endorse or promote products derived from this
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| 28 | * software without prior written permission. For written
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| 29 | * permission, please contact apache\@apache.org.
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| 30 | *
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| 31 | * 5. Products derived from this software may not be called "Apache",
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| 32 | * nor may "Apache" appear in their name, without prior written
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| 33 | * permission of the Apache Software Foundation.
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| 34 | *
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| 35 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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| 36 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 37 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 38 | * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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| 39 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 40 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 41 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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| 42 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 43 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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| 44 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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| 45 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 46 | * SUCH DAMAGE.
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| 47 | * ====================================================================
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| 48 | *
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| 49 | * This software consists of voluntary contributions made by many
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| 50 | * individuals on behalf of the Apache Software Foundation, and was
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| 51 | * originally based on software copyright (c) 2001, International
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| 52 | * Business Machines, Inc., http://www.ibm.com . For more information
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| 53 | * on the Apache Software Foundation, please see
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| 54 | * <http://www.apache.org/>.
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| 55 | */
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| 56 |
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| 57 | /*
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| 58 | * $Id: NamespaceScope.hpp,v 1.5 2003/05/16 21:43:21 knoaman Exp $
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| 59 | */
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| 60 |
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| 61 | #if !defined(NAMESPACESCOPE_HPP)
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| 62 | #define NAMESPACESCOPE_HPP
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| 63 |
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| 64 | #include <xercesc/util/StringPool.hpp>
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| 65 |
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| 66 | XERCES_CPP_NAMESPACE_BEGIN
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| 67 |
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| 68 | //
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| 69 | // NamespaceScope provides a data structure for mapping namespace prefixes
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| 70 | // to their URI's. The mapping accurately reflects the scoping of namespaces
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| 71 | // at a particular instant in time.
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| 72 | //
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| 73 |
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| 74 | class VALIDATORS_EXPORT NamespaceScope : public XMemory
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| 75 | {
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| 76 | public :
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| 77 | // -----------------------------------------------------------------------
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| 78 | // Class specific data types
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| 79 | //
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| 80 | // These really should be private, but some of the compilers we have to
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| 81 | // support are too dumb to deal with that.
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| 82 | //
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| 83 | // PrefMapElem
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| 84 | // fURIId is the id of the URI from the validator's URI map. The
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| 85 | // fPrefId is the id of the prefix from our own prefix pool. The
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| 86 | // namespace stack consists of these elements.
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| 87 | //
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| 88 | // StackElem
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| 89 | // The fMapCapacity is how large fMap has grown so far. fMapCount
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| 90 | // is how many of them are valid right now.
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| 91 | // -----------------------------------------------------------------------
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| 92 | struct PrefMapElem : public XMemory
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| 93 | {
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| 94 | unsigned int fPrefId;
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| 95 | unsigned int fURIId;
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| 96 | };
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| 97 |
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| 98 | struct StackElem : public XMemory
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| 99 | {
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| 100 | PrefMapElem* fMap;
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| 101 | unsigned int fMapCapacity;
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| 102 | unsigned int fMapCount;
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| 103 | };
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| 104 |
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| 105 |
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| 106 | // -----------------------------------------------------------------------
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| 107 | // Constructors and Destructor
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| 108 | // -----------------------------------------------------------------------
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| 109 | NamespaceScope(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
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| 110 | ~NamespaceScope();
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| 111 |
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| 112 |
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| 113 | // -----------------------------------------------------------------------
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| 114 | // Stack access
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| 115 | // -----------------------------------------------------------------------
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| 116 | unsigned int increaseDepth();
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| 117 | unsigned int decreaseDepth();
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| 118 |
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| 119 | // -----------------------------------------------------------------------
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| 120 | // Prefix map methods
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| 121 | // -----------------------------------------------------------------------
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| 122 | void addPrefix(const XMLCh* const prefixToAdd,
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| 123 | const unsigned int uriId);
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| 124 |
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| 125 | unsigned int getNamespaceForPrefix(const XMLCh* const prefixToMap) const;
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| 126 | unsigned int getNamespaceForPrefix(const XMLCh* const prefixToMap,
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| 127 | const int depthLevel) const;
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| 128 |
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| 129 |
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| 130 | // -----------------------------------------------------------------------
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| 131 | // Miscellaneous methods
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| 132 | // -----------------------------------------------------------------------
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| 133 | bool isEmpty() const;
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| 134 | void reset(const unsigned int emptyId);
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| 135 |
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| 136 |
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| 137 | private :
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| 138 | // -----------------------------------------------------------------------
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| 139 | // Unimplemented constructors and operators
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| 140 | // -----------------------------------------------------------------------
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| 141 | NamespaceScope(const NamespaceScope&);
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| 142 | NamespaceScope& operator=(const NamespaceScope&);
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| 143 |
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| 144 |
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| 145 | // -----------------------------------------------------------------------
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| 146 | // Private helper methods
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| 147 | // -----------------------------------------------------------------------
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| 148 | void expandMap(StackElem* const toExpand);
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| 149 | void expandStack();
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| 150 |
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| 151 |
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| 152 | // -----------------------------------------------------------------------
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| 153 | // Data members
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| 154 | //
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| 155 | // fEmptyNamespaceId
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| 156 | // This is the special URI id for the "" namespace, which is magic
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| 157 | // because of the xmlns="" operation.
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| 158 | //
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| 159 | // fPrefixPool
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| 160 | // This is the prefix pool where prefixes are hashed and given unique
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| 161 | // ids. These ids are used to track prefixes in the element stack.
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| 162 | //
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| 163 | // fStack
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| 164 | // fStackCapacity
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| 165 | // fStackTop
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| 166 | // This the stack array. Its an array of pointers to StackElem
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| 167 | // structures. The capacity is the current high water mark of the
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| 168 | // stack. The top is the current top of stack (i.e. the part of it
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| 169 | // being used.)
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| 170 | // -----------------------------------------------------------------------
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| 171 | unsigned int fEmptyNamespaceId;
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| 172 | unsigned int fStackCapacity;
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| 173 | unsigned int fStackTop;
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| 174 | XMLStringPool fPrefixPool;
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| 175 | StackElem** fStack;
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| 176 | MemoryManager* fMemoryManager;
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| 177 | };
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| 178 |
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| 179 |
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| 180 | // ---------------------------------------------------------------------------
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| 181 | // NamespaceScope: Stack access
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| 182 | // ---------------------------------------------------------------------------
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| 183 | inline unsigned int
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| 184 | NamespaceScope::getNamespaceForPrefix(const XMLCh* const prefixToMap) const {
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| 185 |
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| 186 | return getNamespaceForPrefix(prefixToMap, (int)(fStackTop - 1));
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| 187 | }
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| 188 |
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| 189 | // ---------------------------------------------------------------------------
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| 190 | // NamespaceScope: Miscellaneous methods
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| 191 | // ---------------------------------------------------------------------------
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| 192 | inline bool NamespaceScope::isEmpty() const
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| 193 | {
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| 194 | return (fStackTop == 0);
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| 195 | }
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| 196 |
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| 197 | XERCES_CPP_NAMESPACE_END
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| 198 |
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| 199 | #endif
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| 200 |
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| 201 | /**
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| 202 | * End of file NameSpaceScope.hpp
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| 203 | */
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| 204 |
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